Supporting Information

Download Movie_S01 (MOV) -
Slow-motion video of an electric eel leaping to shock a metal-rimmed net. The behavior
was filmed at 1,000 frames/s. The red frames were colorized to indicate the timing
of each high-voltage pulse during the eel’s volley.

Download Movie_S02 (MOV) -
Slow-motion video of an electric eel (eel A) leaping to shock a split carbon rod while
voltage was measured (Fig. 3C). The behavior was filmed at 1,000 frames/s. The red
frames were colorized to indicate the timing of each high-voltage pulse during the
eel’s volley.

Download Movie_S03 (MOV) -
Slow-motion video of an electric eel (eel A) leaping to shock a split carbon rod while
voltage was measured (Fig. 3D). The behavior was filmed at 1,000 frames/s. The red
frames were colorized to indicate the timing of each high-voltage pulse during the
eel’s volley.

Download Movie_S04 (MOV) -
Slow-motion video of an electric eel (eel B) leaping to shock a split aluminum plate
while voltage was measured (Fig. 3E). The behavior was filmed at 1,000 frames/s. The
red frames were colorized to indicate the timing of each high-voltage pulse during
the eel’s volley.

Download Movie_S05 (MOV) -
Slow-motion video of an electric eel (eel C) leaping to shock a split aluminum plate
while voltage was measured (Fig. 3D). The behavior was filmed at 1,000 frames/s. The
red frames were colorized to indicate the timing of each high-voltage pulse during
the eel’s volley.

Download Movie_S06 (MOV) -
Slow-motion video of an electric eel (eel A) leaping to shock a split aluminum plate
while current was measured (Fig. 4). The behavior was filmed at 1,000 frames/s. The
red frames were colorized to indicate the timing of each high-voltage pulse during
the eel’s volley.

Download Movie_S07 (MOV) -
Slow-motion video, followed by real-time video, of an electric eel (eel D) leaping
to shock an imitation arm containing LEDs powered by the electric eel’s discharge.
Conductive tape that is out of view on the back of the limb provided the current path
to the diodes.

Download Movie_S08 (MOV) -
Slow-motion video, followed by real-time video, of an electric eel (eel D) leaping
to shock an imitation predator containing LEDs powered by the electric eel’s discharge.
Conductive tape along the top of the prop provided the current path to the diodes.